MAUDE Adverse Event Report: NORTHGATE TECHNOLOGIES INC. AUTOLITH TOUCH; LITHOTRIPTOR

Model Number 72-00275-0

Device Problem Detachment of Device or Device Component (2907)

Patient Problem No Clinical Signs, Symptoms or Conditions (4582)

Event Type  malfunction  

Manufacturer Narrative

During the service evaluation of this device it was identified that the insulated wire from the high voltage transformer was disconnected from the high voltage pcb within the unit.With the hv wire disconnected from the resistor, the unit will not be able to function as intended since a connected probe requires both wires to be connected to fire.However, there is a potential for electrical shock if the disconnected wire touches the metal case and if someone happens to make physical contact with the device or the patient while shots are being fired.This report is being filed as a malfunction because the disconnection of the wire from the transformer to the hv pcb constitutes an increased risk of potential shock if the disconnected wire were to come into contact with the metal housing.It is currently unknown if this damage was present in the field or occurred in transit.There have been 4 other occurrences of hv wires coming disconnected from boards in the last 2 years.A possible root cause is that this could occur during a cover removal and reinstallation process of the unit at the user facility and the insulated wire from the high voltage transformer to the pcb was either accidentally pulled or yanked.Warnings have been provided in the operator's manual that "the unit should not be opened except by a qualified service person.Tampering by unqualified persons can damage the unit and void the warranty".The operators manual indicates the dielectric and leakage testing has to be performed annually on devices.This device would fail that testing with the wire disconnected.The device history record for 22080ibb from september of 2017 (mo 12830) was reviewed and the device passed all testing.Nothing out of the ordinary was noted.The device has not been returned to nti for repair / evaluation previously.There have been no other complaints reported to nti for this device.A corrective action of applying a tie wrap to secure the high voltage transformer cable that prevents it from coming loose from the power resistor and making contact with the metal case was implemented under ecn-4493, on 30th march, 2020.(b)(4) risk analysis was reviewed.Risk id 7.3.5 (a) refers to accidental mechanical damage with a potential hazard of patient or user injury by a damaged device.The potential hazard is delay in surgical procedure due to the machine not operating.The risk level post mitigation is an n which makes this an acceptable risk.There is an indication in the manual stating "be sure to inspect the autolith® touch unit and any accessories for proper operation before each use.If the unit is found to be defective or damaged, it should be returned to the manufacturer or qualified service personnel for inspection and repair." a clinical evaluation was performed per nor-(b)(4) which proved the benefits of lithotripsy outweigh the risks.Nor-(b)(4) risk analysis, risk id 7.1.1(a) addresses, "electricity - possible shock to patient and/or user due to electric shock" with the possible hazard identified as "break down of insulation on internal generator wires could cause electric shock".The mitigation is that the device was evaluated and passed iec 60601-1 safety testing.The severity is identified as a 5 (potential death) with a likelihood of severity of a 1 (incredible).The risk of death, or serious injury is considered less than remote.A clinical evaluation was performed per (b)(4) which proved the benefits of lithotripsy outweigh the risks.Risk id 7.4.5(c) refers to the risk of not getting the unit to function causing a delay in the procedure.The risk of death or serious injury from the stated issue is remote.If further information were to become available, a follow-up report would be submitted.

Event Description

On 04/03/2023 northgate technologies was made aware of an alleged malfunction of the device that prevent the devices from being used (the device did not fire).The device was not returned for evaluation until 6/14/2023.During the service evaluation it was identified that the insulated wire from the high voltage transformer was disconnected from the high voltage pcb within the unit.

• Brand Name: AUTOLITH TOUCH
• Type of Device: LITHOTRIPTOR
• Manufacturer (Section D): NORTHGATE TECHNOLOGIES INC.; 1591 scottsdale court; elgin IL 60123
• Manufacturer (Section G): NORTHGATE TECHNOLOGIES INC.; 1591 scottsdale court; elgin IL 60123
• Manufacturer Contact: todd gatto ; 1591 scottsdale court; elgin, IL 60123 ; 2248562250
• MDR Report Key: 17415433
• MDR Text Key: 319959118
• Report Number: 0001450997-2023-00004
• Device Sequence Number: 1
• Product Code: FFK
• UDI-Device Identifier: 00817183020493
• UDI-Public: 00817183020493
• Combination Product (y/n): N
• PMA/PMN Number: K130368
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: Other
• Reporter Occupation: Other
• Remedial Action: Repair
• Type of Report: Initial
• Report Date: 07/28/2023

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Device Model Number: 72-00275-0
• Device Catalogue Number: M005466800
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 06/14/2023
• Initial Date Manufacturer Received: 06/14/2023
• Initial Date FDA Received: 07/28/2023
• Was Device Evaluated by Manufacturer?: Yes
• Date Device Manufactured: 09/28/2017
• Is the Device Single Use?: No
• Is This a Reprocessed and Reused Single-Use Device?: No
• Type of Device Usage: Reuse
• Patient Sequence Number: 1